Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Set a field value, removing any other instances of that field.

void
set(
    field name,
    string_view const& value);
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void
set(
    string_view name,
    string_view const& value);
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void
set(
    field,
    std::nullptr_t) = delete;
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void
set(
    string_view,
    std::nullptr_t) = delete;
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